Accession Number : ADA184357

Title :   Coupled Acoustic and Ocean Thermodynamic Model.

Descriptive Note : Master's thesis,

Corporate Author : NAVAL POSTGRADUATE SCHOOL MONTEREY CA

Personal Author(s) : Fourniol,Jacques M

PDF Url : ADA184357

Report Date : Jun 1987

Pagination or Media Count : 101

Abstract : An acoustic ray tracing algorithm is developed and coupled with a thermodynamic upper ocean mixed layer model. For a test case, the coupled mixed layer-acoustic model is applied to a specific area in the western Mediterranean Sea. Climatological atmospheric forcing is used time during different seasons. The response of the acoustic model to the predicted changes in the sound-speed profile is analyzed to show dependence of acoustic propagation upon the surface atmospheric forcing and the season. The atmospheric factors such as wind, rain, and solar irradiation have almost no effect on the propagation of rays emanating from a deep transmitter. In the case of a shallow source, the wind is the most dominating factor which influences the acoustic propagation. The effect of heavy rain with light wind is also examined.

Descriptors :   *UNDERWATER ACOUSTICS, *MIXED LAYER(MARINE), OCEAN MODELS, ACOUSTIC VELOCITY, RAY TRACING, ALGORITHMS, MATHEMATICAL PREDICTION, AIR WATER INTERACTIONS, WIND, SOUND TRANSMISSION, RAIN, SEA WATER, COUPLING(INTERACTION), DEEP DEPTH, SHALLOW DEPTH, MEDITERRANEAN SEA, OCEAN SURFACE, SEASONAL VARIATIONS, MATHEMATICAL MODELS, THESES

Subject Categories : Acoustics
      Physical and Dynamic Oceanography

Distribution Statement : APPROVED FOR PUBLIC RELEASE